On 12 August 2013 01:58, Charles Steinmetz <csteinm...@yandex.com> wrote: > David wrote: > >> How useful is this >> >> http://www.ebay.com/itm/281149723636 ? >> >> On the fact of it, the device would give one a reasonly high >> confidence something is working readlably well. I wonder if that is >> good enough for a 3457A. > > > Let's assume that it is still working exactly the same as it was when it was > calibrated. The calibration values are recorded to 4-1/2 digits. So the > uncertainty is greater than the two LSDs of a 3457A. Of course, it is > almost certainly not working exactly the same as it was when it was > calibrated, which is going to put at least the third LSD of a 3457A in > question. So it is good enough for a 3457A only if one is content with a > 3-1/2 digit verification on a 6-1/2 digit instrument. > > Best regards, > > Charles
Thank you Charles. Yes, on checking the spec I can see it wont be any use. Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
